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Vision-Language-Action (VLA) models process visual inputs independently at each timestep, discarding valuable temporal information inherent in robotic manipulation tasks. This frame-by-frame processing makes models vulnerable to visual…

Computer Vision and Pattern Recognition · Computer Science 2025-11-17 Chenghao Liu , Jiachen Zhang , Chengxuan Li , Zhimu Zhou , Shixin Wu , Songfang Huang , Huiling Duan

Recently, domain generalization (DG) has emerged as a promising solution to mitigate distribution-shift issue in sensor-based human activity recognition (HAR) scenario. However, most existing DG-based works have merely focused on modeling…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Di Xiong , Lei Zhang , Shuoyuan Wang , Dongzhou Cheng , Wenbo Huang

Motivated by the burgeoning interest in cross-domain learning, we present a novel generative modeling challenge: generating counterfactual samples in a target domain based on factual observations from a source domain. Our approach operates…

The recent deep generative models for static graphs that are now being actively developed have achieved significant success in areas such as molecule design. However, many real-world problems involve temporal graphs whose topology and…

Machine Learning · Computer Science 2021-03-09 Liming Zhang , Liang Zhao , Shan Qin , Dieter Pfoser

Classifier-Free Guidance (CFG), which combines the conditional and unconditional score functions with two coefficients summing to one, serves as a practical technique for diffusion model sampling. Theoretically, however, denoising with CFG…

Computer Vision and Pattern Recognition · Computer Science 2025-10-02 Mengfei Xia , Nan Xue , Yujun Shen , Ran Yi , Tieliang Gong , Yong-Jin Liu

Modeling time-evolving preferences of users with their sequential item interactions, has attracted increasing attention in many online applications. Hence, sequential recommender systems have been developed to learn the dynamic user…

Information Retrieval · Computer Science 2022-06-07 Lianghao Xia , Chao Huang , Yong Xu , Jian Pei

Recent studies suggest utilizing generative models instead of traditional auto-regressive algorithms for time series forecasting (TSF) tasks. These non-auto-regressive approaches involving different generative methods, including GAN,…

Machine Learning · Computer Science 2025-03-19 Jiangxuan Long , Zhao Song , Chiwun Yang

As an effective learning paradigm against insufficient training samples, Multi-Task Learning (MTL) encourages knowledge sharing across multiple related tasks so as to improve the overall performance. In MTL, a major challenge springs from…

Machine Learning · Computer Science 2020-04-30 Zhiyong Yang , Qianqian Xu , Xiaochun Cao , Qingming Huang

With efficient appearance learning models, Discriminative Correlation Filter (DCF) has been proven to be very successful in recent video object tracking benchmarks and competitions. However, the existing DCF paradigm suffers from two major…

Computer Vision and Pattern Recognition · Computer Science 2019-06-20 Tianyang Xu , Zhen-Hua Feng , Xiao-Jun Wu , Josef Kittler

Human-human motion generation is essential for understanding humans as social beings. Current methods fall into two main categories: single-person-based methods and separate modeling-based methods. To delve into this field, we abstract the…

Computer Vision and Pattern Recognition · Computer Science 2026-03-11 Yabiao Wang , Shuo Wang , Jiangning Zhang , Ke Fan , Jiafu Wu , Zhucun Xue , Yong Liu

One of the major reasons for misclassification of multiplex actions during action recognition is the unavailability of complementary features that provide the semantic information about the actions. In different domains these features are…

Computer Vision and Pattern Recognition · Computer Science 2020-08-25 Zeeshan Ahmad , Naimul Khan

Event cameras offer unique advantages for vision tasks in challenging environments, yet processing asynchronous event streams remains an open challenge. While existing methods rely on specialized architectures or resource-intensive…

Computer Vision and Pattern Recognition · Computer Science 2025-11-11 Ruihao Xia , Junhong Cai , Luziwei Leng , Liuyi Wang , Chengju Liu , Ran Cheng , Yang Tang , Pan Zhou

We propose a new Group Feature Selection method for Discriminative Correlation Filters (GFS-DCF) based visual object tracking. The key innovation of the proposed method is to perform group feature selection across both channel and spatial…

Computer Vision and Pattern Recognition · Computer Science 2019-08-05 Tianyang Xu , Zhen-Hua Feng , Xiao-Jun Wu , Josef Kittler

Generating high-fidelity time series data using generative adversarial networks (GANs) remains a challenging task, as it is difficult to capture the temporal dependence of joint probability distributions induced by time-series data. Towards…

Machine Learning · Computer Science 2024-04-09 Hang Lou , Siran Li , Hao Ni

Feature transformation enhances downstream task performance by generating informative features through mathematical feature crossing. Despite the advancements in deep learning, feature transformation remains essential for structured data,…

Machine Learning · Computer Science 2026-03-02 Tao Zhe , Huazhen Fang , Kunpeng Liu , Qian Lou , Tamzidul Hoque , Dongjie Wang

Click-through prediction (CTR) models transform features into latent vectors and enumerate possible feature interactions to improve performance based on the input feature set. Therefore, when selecting an optimal feature set, we should…

Information Retrieval · Computer Science 2024-03-27 Fuyuan Lyu , Xing Tang , Dugang Liu , Liang Chen , Xiuqiang He , Xue Liu

Heterogeneity in time series data is more pronounced than in vision or language, as temporal dynamics vary substantially across domains and tasks. Existing efforts on training time series foundation models (TSFMs) from scratch are often…

Machine Learning · Computer Science 2026-04-09 Shengchao Chen , Guodong Long , Dikai Liu , Jing Jiang

Synthetic time series are essential tools for data augmentation, stress testing, and algorithmic prototyping in quantitative finance. However, in cryptocurrency markets, characterized by 24/7 trading, extreme volatility, and rapid regime…

Statistical Finance · Quantitative Finance 2025-08-06 Yihao Ang , Qiang Wang , Qiang Huang , Yifan Bao , Xinyu Xi , Anthony K. H. Tung , Chen Jin , Zhiyong Huang

Long-horizon precision manipulation in laboratory automation, such as pipette tip attachment and liquid transfer, requires policies that respect strict procedural logic while operating in continuous, high-dimensional state spaces. However,…

Robotics · Computer Science 2026-03-03 Yibo Qiu , Shu'ang Sun , Haoliang Ye , Ronald X Xu , Mingzhai Sun

Recognition of surgical gesture is crucial for surgical skill assessment and efficient surgery training. Prior works on this task are based on either variant graphical models such as HMMs and CRFs, or deep learning models such as Recurrent…

Computer Vision and Pattern Recognition · Computer Science 2018-06-22 Daochang Liu , Tingting Jiang